JPS5614432A - Manufacture of optical fiber - Google Patents

Manufacture of optical fiber

Info

Publication number
JPS5614432A
JPS5614432A JP8966879A JP8966879A JPS5614432A JP S5614432 A JPS5614432 A JP S5614432A JP 8966879 A JP8966879 A JP 8966879A JP 8966879 A JP8966879 A JP 8966879A JP S5614432 A JPS5614432 A JP S5614432A
Authority
JP
Japan
Prior art keywords
cocks
tube
starting material
optical fiber
flow rate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8966879A
Other languages
Japanese (ja)
Inventor
Makoto Tsukamoto
Takatoshi Minami
Mitsuhiro Motegi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP8966879A priority Critical patent/JPS5614432A/en
Publication of JPS5614432A publication Critical patent/JPS5614432A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
    • C03B37/018—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD] by glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
    • C03B37/01807—Reactant delivery systems, e.g. reactant deposition burners
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2203/00—Fibre product details, e.g. structure, shape
    • C03B2203/10—Internal structure or shape details
    • C03B2203/18—Axial perturbations, e.g. in refractive index or composition

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Abstract

PURPOSE:To obtain an optical fiber having a refractive index which changes periodically in the longitudinal direction by periodically changing over the flowing directions of dopant starting material vapors different from each other in the flow rate of carrier gas with cocks while allowing the vapors to flow continually. CONSTITUTION:O2 is introduced into bubblers 5, 6 filled with dopant starting material GeCl4 after adjusting the flow rate with mass flow controllers 2, 3 so that the coefficient of refractive index distribution becomes alpha1, alpha2, and GeCl4 is fed to reaction tube 7 together with SiCl4 and O2 of a fixed flow rate from bubbler 4. Changeover cocks C1, C2 are attached in the vicinity of the inlet of tube 7 and changed over with controller 11. When burner 10 for heating tube 7 moves in the D direction, by pushing odd switches S2i-1 and even switches S2i, the starting material vapors flow in the A direction and the B direction with cocks C1, C2, respectively, and different glass layers are deposited on the inner wall of tube 7. A desired optical fiber is then obtd. through a collapsing process and a drawing process.
JP8966879A 1979-07-13 1979-07-13 Manufacture of optical fiber Pending JPS5614432A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8966879A JPS5614432A (en) 1979-07-13 1979-07-13 Manufacture of optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8966879A JPS5614432A (en) 1979-07-13 1979-07-13 Manufacture of optical fiber

Publications (1)

Publication Number Publication Date
JPS5614432A true JPS5614432A (en) 1981-02-12

Family

ID=13977117

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8966879A Pending JPS5614432A (en) 1979-07-13 1979-07-13 Manufacture of optical fiber

Country Status (1)

Country Link
JP (1) JPS5614432A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05253847A (en) * 1992-03-09 1993-10-05 Matsufumi Takatani Metal bond grinding wheel and grinding tool
EP0664464A1 (en) * 1993-12-27 1995-07-26 Corning Incorporated Optical fibre for soliton transmission and method of making
US7192486B2 (en) * 2002-08-15 2007-03-20 Applied Materials, Inc. Clog-resistant gas delivery system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05253847A (en) * 1992-03-09 1993-10-05 Matsufumi Takatani Metal bond grinding wheel and grinding tool
EP0664464A1 (en) * 1993-12-27 1995-07-26 Corning Incorporated Optical fibre for soliton transmission and method of making
US7192486B2 (en) * 2002-08-15 2007-03-20 Applied Materials, Inc. Clog-resistant gas delivery system

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